LeetCode-Reverse Integer

原创于 2014-09-09 20:18:03 发布 · 672 阅读

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作者：disappearedgod

文章出处：http://blog.youkuaiyun.com/disappearedgod/article/details/24662201

时间：2014-4-28

题目

Reverse Integer

Total Accepted: 29438 Total Submissions: 73153 My Submissions

Reverse digits of an integer.

Example1: x = 123, return 321
Example2: x = -123, return -321

思路

代码

public class Solution {
    public int reverse(int x) {
        boolean pos = true;
        if(x<0){
            pos = false;
            x *= -1;
        }
        /*
        else if(x == 0){
            return 0;
        }*/
        int res = 0;
        while(x > 0){
            int flag = x % 10;
            res = 10 * res + flag;
            x /= 10;
        }
        if(!pos)
            res *= -1;
        return res;
    }
}